This is an awesome addition to my workout. I use to take a lot of preworkouts loaded with caffeine leaving me with a headache or sick to my stomach feeling. The Hemavol pills have no caffeine and give me clean energy, an awesome pump and intense focus. I take all ten pills and wash it down with some BCAAs and my creatine and I am ready to hit the weights. I would definitely recommend this to anyone hitting the weights heavy.